fulltext.study @t Gmail

Removal of dibenzothiophenes from model diesel fuel on sulfur rich activated carbons

Paper ID Volume ID Publish Year Pages File Format Full-Text
47053 46457 2011 9 PDF Available
Title
Removal of dibenzothiophenes from model diesel fuel on sulfur rich activated carbons
Abstract

Adsorption of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel with 20 ppmw total concentration of sulfur was investigated on commercial wood based carbon exposed to hydrogen sulfide at 650 °C and 800 °C. The initial and exhausted carbons were characterized using adsorption of nitrogen, thermal analysis, potentiometric titration, FTIR, mass spectroscopy, and elemental analysis. The selectivities for DBT and DMDBT adsorption were calculated with reference to naphthalene. The results showed a marked positive effect of sulfur incorporated to the carbon matrix on the capacity and selectivity for DBT and DMDBT removal from model diesel fuel. This was linked to possible sulfur–sulfur interactions in the whole range of pores. Sulfur in the carbon matrix also contributes to activation of oxygen and oxidation of DBT to sulfoxides and sulfones. Owing to this, not only micropores but also larger pores are active in the selective adsorption.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Carbons with incorporated sulfur were used as adsorbents of dibenzothiophenes from model diesel fuel. ► The positive effect of sulfur on the capacity/selectivity of adsorption was found. ► Selectivity was enhanced owing to sulfur–sulfur interactions. ► Sulfur in the carbon matrix contributes to activation of oxygen. ► DBT to sulfoxides and sulfones were found as the products of reactive adsorption.

Keywords
Dibenzothiophenes; Model diesel fuel; Activated carbon; S-Functionalities; Reactive adsorption
First Page Preview
Removal of dibenzothiophenes from model diesel fuel on sulfur rich activated carbons
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 106, Issues 1–2, 21 July 2011, Pages 133–141
Authors
, ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us